Prompt
spf dkim dmarc email provider
Latest observation
Oct 6, 2026
OpenAI APIWeb search: off
SPF, DKIM, and DMARC are email authentication records you set up with your domain/email provider to help prove your emails are legitimate and reduce spoofing/spam.
What they do
- SPF (Sender Policy Framework): says which servers are allowed to send email for your domain.
- DKIM (DomainKeys Identified Mail): adds a digital signature to outgoing emails so recipients can verify the message wasn’t altered and came from an authorized sender.
- DMARC (Domain-based Message Authentication, Reporting & Conformance): tells receiving mail servers how to handle messages that fail SPF/DKIM and provides reports.
Why they matter
Without them, emails from your domain are more likely to:
- go to spam,
- get rejected,
- or be spoofed by attackers.
What you usually need from your email provider
Your provider will typically give you:
- SPF include record (often a TXT record)
- DKIM selector and public key (TXT or CNAME record)
- DMARC policy (TXT record)
Typical example
- SPF:
v=spf1 include:_spf.yourprovider.com -all - DKIM: provider gives a
selector._domainkey.yourdomain.comrecord - DMARC:
_dmarc.yourdomain.com TXT "v=DMARC1; p=quarantine; rua=mailto:dmarc@yourdomain.com"
Important notes
- You should have only one SPF record per domain.
- SPF should include all services that send mail for your domain (Google Workspace, Microsoft 365, Mailchimp, etc.).
- DMARC works best once SPF and DKIM are correctly configured.
If you want, tell me your email provider (Google Workspace, Microsoft 365, Zoho, SendGrid, etc.) and I can give you the exact SPF/DKIM/DMARC records to add.